600. The principal is____in a meeting with the officials from Ministry of Education. Would you like to leave a message or call back later?
(A) additionally
(B) densely
(C) currently
(D) optimistically
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統計: A(12), B(6), C(52), D(5), E(0) #1592810
統計: A(12), B(6), C(52), D(5), E(0) #1592810